Lunt 40 mm Dedicated Hydrogen- Alpha Specification:
Telescope Type: Dedicated H-alpha
Universal Capabilities: H-alpha
Aperture: 40 mm
Objective Type: Custom Doublet Optimized at 656 nm
Objective Coating: Ion Assist Ultra-Narrowband AR (656 nm)
Focal Ratio: F/10
Focal Length: 400 mm
Focuser Options: Helical or Feather Touch
Mounting: Mounting Foot
Storage: Box with Fitted Foam, Hard Case Optional
H-alpha Etalon Type: Internal Dedicated
Etalon Wavelength: 656.28 nm
Etalon Bandpass: <0.7 Å Single Stack, <0.5 Å Double Stack
Etalon Material: UV Grade Fused Silica
Etalon Tuning: Tilt
Doppler Shifting: Instant
Blocking Filter Size: 5 mm, 6 mm, 12 mm, Diagonal
Blocking Filter Bandpass: 6 Å
Sun Finder: TeleVue Sol Searcher built in
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